Mysterious Shards is a trinket in Glacier's Laboratory, a mod for The Binding of Isaac.

Reveals the location of Ultra Secret Room upon entering a new floor.

Has a 25% chance to spawn a Cracked Key upon entering a new floor.

If Isaac also holds Dad's Red-ray Disc, the location of Ultra Secret Room will not be shown, but instead spawns an extra item and makes all item pedestals cycle between two different items in Ultra Secret Room during the first visit.

The following tags are applied to this trinket:

The following special synergies and interactions for Mysterious Shards have been documented.

* Note that not all possible synergies and interactions are listed here.

• Download Glacier's Laboratory from the Steam Workshop.